* {
    box-sizing: border-box;
}

:root {
    --brand: rgb(255, 80, 0);
    --brand-dark: #E85A00;
    --light-orange: #FFF3EC;
    --page-bg: #F6F6F6;
    --card: #FFFFFF;
    --text: #222222;
    --muted: #555555;
    --soft: #777777;
    --dark: #111111;
    --footer: #1F1F1F;
    --footer-text: #D8D8D8;
    --border: rgba(0, 0, 0, .08);
    --shadow: 0 14px 34px rgba(17, 17, 17, .08);
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
    color: var(--text);
    background: var(--page-bg);
    line-height: 1.75;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

p {
    margin: 0 0 14px;
}

.container {
    width: min(1180px, calc(100% - 32px));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, .96);
    border-bottom: 1px solid rgba(0, 0, 0, .06);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .05);
    backdrop-filter: blur(10px);
}

.mobile-topbar {
    height: 62px;
    display: grid;
    grid-template-columns: 44px 1fr auto;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
}

.menu-toggle {
    width: 42px;
    height: 42px;
    border: 0;
    background: transparent;
    display: grid;
    place-items: center;
    padding: 9px;
    cursor: pointer;
}

.menu-toggle span {
    width: 22px;
    height: 2px;
    display: block;
    background: #222;
    border-radius: 999px;
    margin: 3px 0;
}

.mobile-logo {
    justify-self: center;
    display: inline-flex;
    align-items: center;
    max-width: 116px;
}

.mobile-logo img,
.brand-logo img,
.drawer-logo img,
.footer-brand img {
    object-fit: contain;
}

.main-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--brand);
    color: #FFFFFF;
    border-radius: 999px;
    font-weight: 700;
    letter-spacing: .02em;
    padding: 11px 22px;
    box-shadow: 0 10px 22px rgba(255, 80, 0, .24);
    transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
    white-space: nowrap;
}

.main-btn:hover {
    background: var(--brand-dark);
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(232, 90, 0, .28);
}

.header-btn {
    padding: 8px 14px;
    font-size: 13px;
}

.desktop-header {
    display: none;
    min-height: 76px;
    align-items: center;
    gap: 24px;
}

.brand-logo {
    width: 140px;
    flex: 0 0 auto;
}

.desktop-nav {
    flex: 1;
    display: flex;
    justify-content: center;
    gap: 4px;
}

.desktop-nav a {
    padding: 10px 12px;
    color: #303030;
    font-size: 15px;
    border-radius: 999px;
    transition: color .2s ease, background .2s ease;
}

.desktop-nav a:hover,
.desktop-nav a.active {
    color: var(--brand);
    background: var(--light-orange);
}

.drawer-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .45);
    opacity: 0;
    visibility: hidden;
    transition: opacity .25s ease, visibility .25s ease;
    z-index: 1001;
}

.mobile-drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: min(84vw, 320px);
    height: 100vh;
    background: #FFFFFF;
    transform: translateX(-105%);
    transition: transform .28s ease;
    z-index: 1002;
    box-shadow: 22px 0 50px rgba(0, 0, 0, .18);
    padding: 18px;
    overflow-y: auto;
}

.drawer-open {
    overflow: hidden;
}

.drawer-open .drawer-overlay {
    opacity: 1;
    visibility: visible;
}

.drawer-open .mobile-drawer {
    transform: translateX(0);
}

.drawer-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.drawer-logo {
    width: 126px;
}

.drawer-close {
    width: 36px;
    height: 36px;
    border: 0;
    background: var(--light-orange);
    color: var(--brand);
    border-radius: 50%;
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
}

.drawer-nav {
    display: grid;
    gap: 8px;
    padding: 18px 0;
}

.drawer-nav a {
    padding: 13px 14px;
    border-radius: 12px;
    color: #2C2C2C;
    background: #FAFAFA;
    border: 1px solid rgba(0, 0, 0, .04);
    font-weight: 650;
}

.drawer-nav a.active,
.drawer-nav a:hover {
    color: var(--brand);
    background: var(--light-orange);
}

.hero-section {
    background:
      linear-gradient(90deg, rgba(0,0,0,.78), rgba(0,0,0,.58)),
      url('banner.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    padding: 34px 0 44px;
    color: #FFFFFF;
    position: relative;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
    gap: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: min(1180px, calc(100% - 32px));
    text-align: center;
}

.hero-image {
    position: relative;
    z-index: 2;
    display: grid;
    place-items: center;
}

.hero-image img {
    width: 100%;
    max-height: 320px;
    object-fit: contain;
    filter: drop-shadow(0 22px 34px rgba(0, 0, 0, .5));
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-kicker,
.section-kicker,
.card-tag,
.notice-tag {
    color: var(--brand);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .1em;
    text-transform: uppercase;
}

.hero-title {
    margin: 8px 0 12px;
    color: rgb(255, 80, 0);
    font-size: clamp(34px, 8vw, 58px);
    line-height: 1.08;
    font-weight: 900;
}

.hero-desc {
    color: #FFFFFF;
    font-size: 16px;
    max-width: 620px;
    margin: 0 auto 22px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 18px;
}

.hero-meta span,
.feature-badges span,
.app-tags span,
.small-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 5px 11px;
    background: rgba(255, 80, 0, .12);
    color: var(--brand);
    font-size: 13px;
    font-weight: 700;
}

.hero-meta span {
    background: rgba(255, 255, 255, .12);
    color: #F4F4F4;
    border: 1px solid rgba(255, 255, 255, .18);
}

.section {
    padding: 54px 0;
}

.section.white {
    background: #FFFFFF;
}

.section.orange-soft {
    background: var(--light-orange);
}

.section.gray {
    background: var(--page-bg);
}

.section-head {
    margin-bottom: 26px;
    max-width: 780px;
}

.section-head.center {
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    margin: 6px 0 10px;
    font-size: clamp(26px, 4.5vw, 40px);
    line-height: 1.22;
    color: #181818;
}

.section-title .accent,
.accent {
    color: var(--brand);
}

.section-desc {
    color: var(--muted);
    font-size: 16px;
}

.quick-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
}

.quick-card {
    background: #FFFFFF;
    border-radius: 16px;
    border: 1px solid rgba(255, 80, 0, .12);
    box-shadow: 0 10px 26px rgba(0, 0, 0, .04);
    padding: 16px;
}

.quick-card strong {
    display: block;
    font-size: 17px;
    margin-bottom: 4px;
}

.quick-card p {
    color: var(--muted);
    font-size: 14px;
    margin-bottom: 8px;
}

.text-link {
    color: var(--brand);
    font-weight: 800;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.text-link::after {
    content: "›";
    font-size: 18px;
    line-height: 1;
}

.text-link:hover {
    color: var(--brand-dark);
}

.feature-grid,
.category-grid,
.service-grid,
.info-grid,
.notice-grid,
.faq-grid,
.step-grid,
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.feature-card,
.content-card,
.service-card,
.faq-item,
.notice-card,
.step-card,
.contact-card,
.rich-card {
    background: #FFFFFF;
    border-radius: 18px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(0, 0, 0, .04);
    overflow: hidden;
}

.feature-card {
    display: grid;
}

.feature-body,
.content-body,
.service-card,
.faq-item,
.notice-card,
.step-card,
.contact-card,
.rich-card {
    padding: 20px;
}

.image-shell {
    background:
        radial-gradient(circle at 20% 20%, rgba(255, 80, 0, .12), transparent 32%),
        linear-gradient(135deg, #FFFFFF, #FFF3EC);
    min-height: 138px;
    max-height: 196px;
    display: grid;
    place-items: center;
    padding: 14px;
}

.image-shell img {
    width: 100%;
    height: 100%;
    max-height: 168px;
    object-fit: contain;
    object-position: center;
}

.image-shell.tall {
    max-height: 280px;
    min-height: 210px;
}

.image-shell.tall img {
    max-height: 250px;
}

.feature-card h3,
.content-card h3,
.service-card h3,
.faq-item h3,
.notice-card h3,
.step-card h3,
.contact-card h3,
.rich-card h3 {
    margin: 0 0 8px;
    font-size: 21px;
    line-height: 1.32;
}

.feature-card p,
.content-card p,
.service-card p,
.faq-item p,
.notice-card p,
.step-card p,
.contact-card p,
.rich-card p {
    color: var(--muted);
}

.feature-badges,
.app-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 8px 0 12px;
}

.app-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 22px;
    align-items: center;
}

.app-panel {
    background: #FFFFFF;
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 22px;
}

.app-visual {
    background:
        radial-gradient(circle at 80% 10%, rgba(255, 80, 0, .16), transparent 34%),
        linear-gradient(160deg, #FFFFFF, #FFF3EC);
    border-radius: 22px;
    padding: 22px;
    box-shadow: var(--shadow);
}

.app-visual img {
    width: 100%;
    max-height: 360px;
    object-fit: contain;
}

.service-card {
    min-height: 100%;
}

.service-icon {
    width: 42px;
    height: 42px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: var(--light-orange);
    color: var(--brand);
    font-weight: 900;
    margin-bottom: 12px;
}

.legal-strip {
    background: #111111;
    color: #EAEAEA;
    border-radius: 20px;
    padding: 24px;
    box-shadow: 0 16px 36px rgba(0, 0, 0, .18);
}

.legal-strip h2,
.legal-strip h3 {
    margin: 0 0 10px;
    color: var(--brand);
}

.legal-strip p,
.legal-strip li {
    color: #E8E8E8;
}

.legal-list {
    margin: 14px 0 0;
    padding-left: 20px;
}

.faq-item {
    border-left: 4px solid var(--brand);
}

.page-hero {
    background:
        linear-gradient(115deg, rgba(7, 7, 7, .90), rgba(17, 17, 17, .76)),
        radial-gradient(circle at 85% 20%, rgba(255, 80, 0, .30), transparent 36%);
    color: #FFFFFF;
    padding: 58px 0 50px;
}

.page-hero .container {
    max-width: 980px;
}

.breadcrumb {
    color: var(--brand);
    font-weight: 800;
    font-size: 14px;
}

.page-hero h1 {
    margin: 10px 0 14px;
    color: var(--brand);
    font-size: clamp(32px, 7vw, 52px);
    line-height: 1.12;
}

.page-hero p {
    color: #F1F1F1;
    font-size: 17px;
    max-width: 860px;
}

.content-block {
    background: #FFFFFF;
    border-radius: 20px;
    box-shadow: var(--shadow);
    padding: 22px;
    margin-bottom: 20px;
}

.content-block h2 {
    margin: 0 0 12px;
    font-size: 26px;
}

.content-block h2,
.content-block h3 {
    color: #151515;
}

.content-block p,
.content-block li {
    color: var(--muted);
}

.check-list,
.clean-list {
    margin: 12px 0 0;
    padding-left: 20px;
    color: var(--muted);
}

.check-list li,
.clean-list li {
    margin: 6px 0;
}

.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 18px;
    margin-top: 16px;
}

.site-footer {
    background: var(--footer);
    color: var(--footer-text);
    padding-top: 46px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 26px;
}

.footer-brand img {
    width: 138px;
    margin-bottom: 14px;
}

.footer-brand p {
    color: #D8D8D8;
}

.footer-col h3 {
    color: #FFFFFF;
    margin: 0 0 12px;
    font-size: 18px;
}

.footer-col a {
    display: block;
    color: #D8D8D8;
    padding: 4px 0;
}

.footer-col a:hover {
    color: var(--brand);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .10);
    margin-top: 32px;
    padding: 18px 16px;
    text-align: center;
    color: #CFCFCF;
    font-size: 14px;
}

@media (min-width: 640px) {
    .quick-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-grid,
    .category-grid,
    .service-grid,
    .faq-grid,
    .step-grid,
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .info-grid,
    .notice-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 769px) {
    .mobile-topbar {
        display: none;
    }

    .desktop-header {
        display: flex;
    }

    .header-btn {
        font-size: 15px;
        padding: 10px 20px;
    }

    .hero-section {
        padding: 48px 0 56px;
    }

    .hero-inner {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 40px;
        text-align: left;
    }

    .hero-image {
        order: 1;
    }

    .hero-content {
        order: 2;
    }

    .hero-image img {
        max-height: 520px;
    }

    .hero-desc {
        margin-left: 0;
        margin-right: 0;
        font-size: 17px;
    }

    .hero-meta {
        justify-content: flex-start;
    }

    .feature-card.wide {
        grid-column: span 2;
        grid-template-columns: .95fr 1.05fr;
        align-items: center;
    }

    .app-section {
        grid-template-columns: .95fr 1.05fr;
    }

    .footer-grid {
        grid-template-columns: 1.7fr repeat(3, 1fr);
    }
}

@media (min-width: 980px) {
    .quick-grid {
        grid-template-columns: repeat(9, 1fr);
    }

    .category-grid,
    .service-grid,
    .contact-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .faq-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-card.wide {
        grid-column: span 2;
    }

    .step-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 390px) {
    .mobile-logo {
        max-width: 104px;
    }

    .header-btn {
        padding: 7px 10px;
        font-size: 13px;
    }

    .hero-title {
        font-size: 32px;
    }

    .quick-grid {
        gap: 10px;
    }

    .quick-card {
        padding: 13px;
    }
}